﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using Microsoft.Phone.Shell;
using Store.WP7.Framework.Helpers;
using Store.WP7.Framework.Settings;
using Store.WP7.Framework;
using Microsoft.Phone.Tasks;
using Store.WP7.Framework.Configuration;
using Microsoft.Phone.Net.NetworkInformation;
using Store.WP7.Framework.ErrorManagement;
using Microsoft.Phone.Notification;
using Store.WP7.Data;

namespace Store.WP7
{
    public partial class App : Application
    {
        /// <summary>
        /// Provides easy access to the root frame of the Phone Application.
        /// </summary>
        /// <returns>The root frame of the Phone Application.</returns>
        public PhoneApplicationFrame RootFrame { get; private set; }

        /// <summary>
        /// Constructor for the Application object.
        /// </summary>
        public App()
        {
            // Global handler for uncaught exceptions. 
            UnhandledException += Application_UnhandledException;

            // Standard Silverlight initialization
            InitializeComponent();

            // Phone-specific initialization
            InitializePhoneApplication();

            ThemeManager.ToLightTheme();
                        
            // Show graphics profiling information while debugging.
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // Display the current frame rate counters.
                Application.Current.Host.Settings.EnableFrameRateCounter = true;

                MetroGridHelper.IsVisible = true;

                //MemoryMonitor memoryMonitor = new MemoryMonitor(true, true); 

                // Show the areas of the app that are being redrawn in each frame.
                //Application.Current.Host.Settings.EnableRedrawRegions = true;

                // Enable non-production analysis visualization mode, 
                // which shows areas of a page that are handed off to GPU with a colored overlay.
                //Application.Current.Host.Settings.EnableCacheVisualization = true;

                // Disable the application idle detection by setting the UserIdleDetectionMode property of the
                // application's PhoneApplicationService object to Disabled.
                // Caution:- Use this under debug mode only. Application that disables user idle detection will continue to run
                // and consume battery power when the user is not using the phone.
                PhoneApplicationService.Current.UserIdleDetectionMode = IdleDetectionMode.Disabled;
            }
        }

        // Code to execute when the application is launching (eg, from Start)
        // This code will not execute when the application is reactivated
        private void Application_Launching(object sender, LaunchingEventArgs e)
        {
            if (ConfigurationManager.Instance.CanUseBackgroundAgent)
                BackgroundAgentHelper.TryEnableBackgroundAgent();

            CheckForPreviousException();
            HandlePushNotification();
        }

        #region Push Notifications
        private string _notificationUrl;
        private HttpNotificationChannel _httpNotificationChannel;
        private const string NOTIFICATION_CHANNEL = "MYSTORE_PUSH";

        private void HandlePushNotification()
        {
            _httpNotificationChannel = HttpNotificationChannel.Find(NOTIFICATION_CHANNEL);
            if (ConfigurationManager.Instance.CanUsePushData)
            {
                if (_httpNotificationChannel == null)
                {
                    _httpNotificationChannel = new HttpNotificationChannel(NOTIFICATION_CHANNEL);
                    _httpNotificationChannel.ChannelUriUpdated += OnChannelUriUpdated;
                    _httpNotificationChannel.ErrorOccurred += OnErrorOccured;
                    _httpNotificationChannel.ShellToastNotificationReceived += OnShellToastNotificationReceived;

                    _httpNotificationChannel.Open();
                    _httpNotificationChannel.BindToShellToast();
                }
                else
                {
                    _httpNotificationChannel.ChannelUriUpdated += OnChannelUriUpdated;
                    _httpNotificationChannel.ErrorOccurred += OnErrorOccured;
                    _httpNotificationChannel.ShellToastNotificationReceived += OnShellToastNotificationReceived;
                }
            }
            else if (_httpNotificationChannel != null)
            {
                _httpNotificationChannel.UnbindToShellToast();
                _httpNotificationChannel.Close();
                _httpNotificationChannel.Dispose();
            }
        }

        private void OnChannelUriUpdated(object sender, NotificationChannelUriEventArgs e)
        {
            _notificationUrl = e.ChannelUri.ToString();
            PushNotificationsService pushService = new PushNotificationsService();
            var appSettings = AppSettings.Load();
            pushService.SuscribeToPushNotificationAsync(appSettings.CustomerId, _notificationUrl, null);
        }

        private void OnErrorOccured(object sender, NotificationChannelErrorEventArgs e)
        {
            ToastService.Instance.ShowNotification(ToastType.Error, "Les notifications en mode push ont rencontrées une erreur...");
        }

        private void OnShellToastNotificationReceived(object sender, NotificationEventArgs e)
        {
            string text1 = string.Empty;
            string text2 = string.Empty;
            string param = string.Empty;

            if (e.Collection.ContainsKey("wp:Text1"))
                text1 = e.Collection["wp:Text1"];

            if (e.Collection.ContainsKey("wp:Text2"))
                text2 = e.Collection["wp:Text2"];

            if (e.Collection.ContainsKey("wp:Param"))
                param = e.Collection["wp:Param"];

            Deployment.Current.Dispatcher.BeginInvoke(() =>
            {
                Action onTapAction = () => RootFrame.Navigate(new Uri(param, UriKind.Relative));
                ToastService.Instance.ShowNotification(ToastType.OK, onTapAction, text2, text1);
            });
        }
        #endregion

        // Code to execute when the application is activated (brought to foreground)
        // This code will not execute when the application is first launched
        private void Application_Activated(object sender, ActivatedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                //MemoryMonitor memoryMonitor = new MemoryMonitor(true, true);
            }
        }

        // Code to execute when the application is deactivated (sent to background)
        // This code will not execute when the application is closing
        private void Application_Deactivated(object sender, DeactivatedEventArgs e)
        {
        }

        // Code to execute when the application is closing (eg, user hit Back)
        // This code will not execute when the application is deactivated
        private void Application_Closing(object sender, ClosingEventArgs e)
        {
        }

        // Code to execute if a navigation fails
        private void RootFrame_NavigationFailed(object sender, NavigationFailedEventArgs e)
        {
            if (System.Diagnostics.Debugger.IsAttached)
            {
                // A navigation has failed; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        // Code to execute on Unhandled Exceptions
        private void Application_UnhandledException(object sender, ApplicationUnhandledExceptionEventArgs e)
        {
            ExceptionManager.Instance.SaveException(e.ExceptionObject as Exception);

            if (System.Diagnostics.Debugger.IsAttached)
            {
                // An unhandled exception has occurred; break into the debugger
                System.Diagnostics.Debugger.Break();
            }
        }

        #region Exception management

        /// <summary>
        /// Checks any previous exception to send a bug report
        /// </summary>
        private void CheckForPreviousException()
        {
            var exception = ExceptionManager.Instance.GetPreviousException(true);

            if (exception != null)
            {
                if (ConfigurationManager.Instance.CanSendAnonymousReport)
                {
                    SendCrashReport(exception);
                }
                else
                {
                    var result = MessageBox.Show(
                        "Un problème est survenu lors de votre dernière utilisation, voulez-vous envoyer un rapport d'erreur anonyme ?", 
                        "Rapport d'erreur", 
                        MessageBoxButton.OKCancel);

                    if (result == MessageBoxResult.OK)
                    {
                        SendCrashReportByMail(exception); 
                    }
                }
            }
        }

        /// <summary>
        /// Send the bug report by mail
        /// </summary>
        /// <param name="exception"></param>
        private void SendCrashReportByMail(ExceptionStorage exception)
        {
            var mail = new EmailComposeTask();
            mail.To = "bugs@mystore.com";
            mail.Subject = "MyStore - Rapport de bug";

            mail.Body = ExceptionManager.Instance.GetReport(exception);

            Deployment.Current.Dispatcher.BeginInvoke(() => mail.Show());
        }

        /// <summary>
        /// Send the bug report through a web service
        /// </summary>
        /// <param name="exception"></param>
        private void SendCrashReport(ExceptionStorage exception)
        {
            // TODO : service d'envoi crash report
        }

        #endregion

        #region Phone application initialization

        // Avoid double-initialization
        private bool phoneApplicationInitialized = false;

        // Do not add any additional code to this method
        private void InitializePhoneApplication()
        {
            if (phoneApplicationInitialized)
                return;

            // Create the frame but don't set it as RootVisual yet; this allows the splash
            // screen to remain active until the application is ready to render.
            //RootFrame = new PhoneApplicationFrame();
            RootFrame = new TransitionFrame();
            RootFrame.Navigated += CompleteInitializePhoneApplication;

            // Handle navigation failures
            RootFrame.NavigationFailed += RootFrame_NavigationFailed;

            // Ensure we don't initialize again
            phoneApplicationInitialized = true;

            System.Threading.Thread.CurrentThread.CurrentCulture = new System.Globalization.CultureInfo("fr-FR");
            System.Threading.Thread.CurrentThread.CurrentUICulture = new System.Globalization.CultureInfo("fr-FR");
        }

        // Do not add any additional code to this method
        private void CompleteInitializePhoneApplication(object sender, NavigationEventArgs e)
        {
            // Set the root visual to allow the application to render
            if (RootVisual != RootFrame)
                RootVisual = RootFrame;

            // Remove this handler since it is no longer needed
            RootFrame.Navigated -= CompleteInitializePhoneApplication;
        }

        #endregion
    }
}
